Generation of steam from the heat contained in slags.



C VAUTIN, I GENERATION 0F STEAM FROM THE HEAT CONTAINED IN SLAGS.

, APPLICATION FILED OCT. 24. 1914.

Patented Apr. 30, 1918.

WITNESSES N N INV ENTOR I 6. m M

3O v a method and apparatus for generating mut ant artist ctiaunn 'vnucrrn, or Lennon, ENGLAND.

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To all whom it may concern: y i

' Be it known that I, CLAUDE VAUTIN, a subject of the King of England, residing at London, England, have invented anew and useful Improvement in the Generation of 7 Steam from ,the Heat Contained in Slags,

of which the following is a full, clear, and exact description. V

This invention relates to an improvement in methodof generating steam fromthe heat contained in slag, scoria or thelike and apparatus therefoiy'and refers more particularly to the process described inmy earlier PatentNo. 972, il8. a v

Tnapparatus and processes'for generating steam from hot slag heretofore know to me, the moltenslag was broughtinto contact with the water contained in aclosed vessel and the slag thus chilled was removed from the vessel, the low pressure steam produced by the chilling of this slag was fed to a point of use. One of the disadvantages of such a process a is that objectional gases were carried ofi' with the steam, which would affect the metal of the turbines or other 1110- tors in which the steam was used. There is also danger of finelyrdividedslag being carried over with the steam which has a very destructive effect ongthe motors. The object of my invention isto provide clean steam from hot slag-,andwhich apparatus comprises a closed vessel containing water into which the hot slag is fed, the steam generated thereby being fed to a heat exchanger containing clean water out of contact with the dirty steam which is generated into steam, and delivered to the point of use, the water of condensation from the dirty steam is fed back to the closed vessel in which the slag is cooled,

The precise nature of my invention will be best understood by reference to the accompanying drawing, which will nowbedescribed, it being premised, however, that various changes may be made in the details of construction of the apparatus, without departing from the spirit and scope of my invention as defined in the appended claims.

In the accompanying drawing I have shown in diagram, partially in section and partially in elevation, an apparatus for carrying out my invention. In this drawing the reference character S designates a generator containing water, and which is closed to the atmosphere. There is an open- ""Specification of Letters Patent. 7 Patented Apt; 3'0, 191%; V Application filed October 24, 1914. Serial No. 868,390. i i i i V ing through the top ofi this generator throughwhich the hot slag is fed from a trough It, i said opening being sealed by means of a tubular conduit S. which extends below the normal level of the water therein. Rotatably mounted in suitable bearings on the generator is a shaft S which extends through the wall thereof, and is provided with blades 0 below the normal water level, andwhich are arranged to agitate the water as the hotslag passes thereth-rough. S, is aslag elevatorwhich arranged to carry the granulated slagfrom thetbettom of the generator to the top of a chute S into which it is delivered and from which it is dropped into trucks or cars S Une wall of the casing iinclosing this elevator extends into the generator-below the level. of the water to prevent the steam and gases in the top of the generator from escaping through the elevator chute;

Connected to the steam generators by means of a pipe T, is a heater 7U, which heater is also connected to aheat exchanger by means of a pipe U. This heatexchang'er comprises a shell D which is divided into three compartments D D and D by means of plates B and B. i A are water tubes within the heat exchanger, whichware connected to the plates B and B. The lower end of compartmentv D is connected by meansof a return pipe D* with the genorator S, to return the water of condensa tion from the heat exchanger back to the generator. The compartment D of thecheat exchanger is connected with a separator W" by means of a pipe W the lower endof said separator being connected to thecompartments D by means of. apipe W D is an annular baflie in the compartment D which is arranged to provide means for preventing sediment from entering the tubes A it as: hereinafter described; Rotatably mounted within the separator W is a centrifugal separator W The upper end of the sepaupper portion of the chamber 1) in the heat exchanger and which pipe is provided with will be continuously moved past the conduit pipe D S. This passing of the hot slag through the water will generate steam in the generator, the steam flowing through the pipe T, heater U, pipe U into the compartment D of the heat exchanger, and surrounding the various tubes A extending therethrough, thereby heating the water within the tubes. The water of condensation from the compartment D will pass back to the generator through the Clean water from which steam is to be generated for use is passed from the pipe V through the coil in the heater U, and then to the bottom of the separator W. Any steam generated therein will pass directly to the outlet X and the turbine, and the heated Water will fall into the bottom of the separator and will pass from there to the compartment D of the heat exchanger. The water which flows into this compartment will-not flow directly to the open ends of the tubes A, but will flow over the top of the baffle D and from there to the ends of the tubes A. The steam generated in these tubes A Will rise to the compartment D and pass from there to the separator through the connection W The advantages of my invention result from the provision of a method and apparatus for generating clean steam from the heat contained in the hot slag, and in which the steam generated from the hot slag is passed through a heat exchanger in which steam is generated from clean water which is passed to the point of use.

lVh'at I claim as my invention and desire to secureby Letters Patent is 1. Apparatus comprising in combination,

00111:: or this instant may be obtained for a substantially closed steamgenerator containing water, a trapped inlet for slag there to, means for removing the slag continuously from the generator, :1 limit-exchanger for generating clean steam by the utilization of the hot steam and gases generated by the slag and water, an apparatus in which the clean steam is to be utilized connected with the heat-exchanger, a conduit for returning the condensed slug-steam products to the generator and means to permit the escape of uncondensed products from the slag-steam circuit.

2. Apparatus comprising in combination, a substantially closed steam-generator containing water, a trapped inlet for slag thereto, means for removing the slag continuously from the generator, a heat-exchanger for generating clean steam by the utilization of the hot steam and gases generated by the slag and water, a low pressure turbine connected with the heat-exchanger to receive the clean steam therefrom, a heat-accumulator connected in the steam-circuit, a conduit for returning the condensed slag-steam products to the generator and means to permit the escape of uncondensed products from the slag-steam circuit.

3. Apparatus comprising in combination, a substantially closed generator containing water, an agitator therein, a trapped slaginlet for the generator, means for removing the slag continuously from the generator, a 'heatsexchanger for generating clean steam by the utilization of the hot steam and gases generated by the slag and water, a low pressure turbine connected with the heat-exchanger to receive the clean steam therefrom, a conduit for returning the condensed slugsteam products to the generator and means to permit the escape of uncondensed products from the slag-steam circuit.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CLAUDE VAUTIN \Vitnesses P. B. SMY'IH, H. D. JAMESON.

five cents each, by addressing the Commissioner of Patents Washington, D. 0. 

